ci: add PowerShell script analyzer workflow

Author: Lay007

.github/workflows/powershell-lint.yml

@@ -0,0 +1,34 @@
+name: PowerShell lint
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: read
+
+jobs:
+  psscriptanalyzer:
+    name: PSScriptAnalyzer
+    runs-on: windows-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Install PSScriptAnalyzer
+        shell: pwsh
+        run: |
+          Set-PSRepository -Name PSGallery -InstallationPolicy Trusted
+          Install-Module -Name PSScriptAnalyzer -Scope CurrentUser -Force
+
+      - name: Run analyzer
+        shell: pwsh
+        run: |
+          $results = Invoke-ScriptAnalyzer -Path . -Recurse -Severity Error,Warning
+          $results | Format-Table -AutoSize
+          if ($results) {
+            throw "PSScriptAnalyzer found issues."
+          }